6N01铝合金FSW接头的电流处理

IF 7 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2023-03-14 DOI:10.1016/j.msea.2023.144785

Zhimin Liang , Guanying Wang , Yongxian Huang , Zhenzhen Peng , Yongmei Liang , Dianlong Wang , Liwei Wang

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引用次数: 1

摘要

研究成功地利用电脉冲溶液和直流时效等电流处理彻底替代焊后热处理，实现了6N01铝合金搅拌摩擦焊接头析出物的人工控制和力学性能的提高。利用电脉冲溶液，β′可在3 s内完全溶解，形成过饱和固溶体。随后的直流两阶段时效促进了高密度β′的形成，显微硬度提高了21.8%，强度提高了约15%。本研究拓展了对析出硬化铝合金接头焊后处理的研究视野，拓展了人工控制析出的潜在功能。

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Electrical current treatment of 6N01 Al alloy FSW joints

Studies successfully exploit electric current treatment including electropulsing solution and direct-current (DC) aging to thoroughly substitute post-weld heat treatment and realize artificial controlling of precipitation as well as the improvement of mechanical property in 6N01 Al alloy friction-stir-welding (FSW) joints. Utilizing electropulsing solution, β' can be dissolved completely within 3 s to form super-saturated solid solution. The subsequent DC two-stage aging promotes the formation of high-density βʺ within 5 h and increases the microhardness by 21.8% and strength by about 15%. This study extends perspectives on post-weld treatment of precipitation-hardening Al alloy joints and expand the potential function of artificial controlling of precipitation.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.